#!/usr/bin/python3

try:
    meinv = zhaoliying
    f = open('daydayup.txt','w+')
    f.write("sanle python DT\n")
    f.close()
'''
except NameError as e:
    print(e)
    print('please check the name of variable')
except FileNotFoundError:
    print("Error:file is not found,please check the path of file")

else:
    print("the file is yes")
'''
